5231918 has 4 divisors (see below), whose sum is σ = 7847880. Its totient is φ = 2615958.

The previous prime is 5231917. The next prime is 5231923. The reversal of 5231918 is 8191325.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5231917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1307978 + ... + 1307981.

It is an arithmetic number, because the mean of its divisors is an integer number (1961970).

Almost surely, 2^5231918 is an apocalyptic number.

5231918 is a deficient number, since it is larger than the sum of its proper divisors (2615962).

5231918 is a wasteful number, since it uses less digits than its factorization.

5231918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615961.

The product of its digits is 2160, while the sum is 29.

The square root of 5231918 is about 2287.3386281878. The cubic root of 5231918 is about 173.6015677618.

The spelling of 5231918 in words is "five million, two hundred thirty-one thousand, nine hundred eighteen".